Air-heating device for explosive-engines.



E, THORNTON 62 G. M. WHEELER. AIR HEATING DEVICE FOR EXPLOSIVE ENGINES APPLICATION FILED my 20, 1913.

1,131,016, Patented Mar9,1915.

@Hoznmp andGEonGE .M. WHEELER, citizens of the UNITED STATES PATENT OFFICE.

- EUGENE THORNTON AND GEORGE M. WHEELER, BUTTE, MONTANA.

AIR- HEATING DEVICE FOR EXPLOSIVE-ENGINES.

. To all whom it may concern:

Beit known that we, EUGENE THORNTON United States, residing at Butte, in the county of Silverbow, State of Montana, have invented certain new and useful Improvements in Air-Heating Devices for Explosive-Engines; and We do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to air heating devices for explosive engines.

The object of the invention resides in the provision of a device which will efiiciently heat the air before same is drawn into the carbureter whereby gine is materially enhanced.

A further object of the invention resides in the provision of a device of the character named which will be simple in construction, and which" may be manufactured and installed at a comparatively small cost.

With the above and other objects in View the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claim. In describing the invention in detail ref erence will be had to the accompanying drawings wherein like characters of reference denote corresponding parts in the several views, and in which- Figure 1 is a view in elevation showing the improved device applied in operative relation to the carbureter and exhaust pipe of an explosive engine; Fig. 2, alongitudinal section of what is shown in Fig. 1; Fig. 3, a section'on the line 3-3 of Fig. 2, and Fig. 4,

a detail perspective view showing the construction of the removable casing which surrounds the carbureter.

Referring to the drawings 10 indicates the carbureter of an explosive engine and 11 the exhaust pipe which latter includes the usual muffler 12. Surrounding the mufiler 12 in' spaced relation thereto is a casing 113 provided with a reduced extension 14 which surrounds a portion of the exhaust pipe 11 in spaced relation to the latter. The outer end of the extension 14 is provided with a lateral flange 15 upon which il secured a re.

Specification 01' Letters Patent.

Application filed May 20, 1913. Serial No. 768,792.

the'efiiciency of the en-.

Patented Mar. 9, 1915.

movable casing 16 surrounding the carbureter 10. Secured to the forward end of the casing 13, beneath the exhaust pipe 11 is a forwardly opening funnel 17 and dis-' posed in the casing 13 between same and the mufiler 12 directly above the funnel 17 is a partition 18.

In the use of the device it will be apparent that when the automobile with which same is associated is traveling the air will be forced through the funnel 17 into the space between the casing 13 partition 18 will prevent this air from passing directly into the reduced portion 14 of the casing with the result that same will circulate around the muflier 12 and then pass through the reduced portion 14 and thence into the casing 16 from where it will be drawn into the carbureter 10 in the usual and well known manner. It will be obvious with the air passing through the space between the casing 13 and mufil'er 12 and between the space between the reduced portion 14 of the casing and the exhaust pipe 11 will be efiiciently heated by the exhaust gases and will result in the supplying of a highly combustible mixture by. the carbureter to the engine.

What we claim is The combination with the carbureter exhaust pipe, and mufller of an explosive engine, of a casing surrounding the mufller, in spaced relation to the latter, a reduced extension on said casing surrounding a pof'tion of the exhaust pipes and having a laterally directed free end, a longitudinal partition within the casing between the mufiler and the end of the casing adjacent the extension,

and mufiler 12. The

saidpartition being disposed beneath the ex- 

